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Archive for the ‘ostrich’ Category

Casey Holliday measuring ostrich bones (2001).

A project that got its start way back in WitmerLab’s Triassic Period finally came to fruition, thanks to the professionalism and perseverance of lead author Casey Holliday. Today, in the freely available, open-access online journal PLoS ONE, we published an article (Holliday et al. 2010) on the caps of cartilage (known as epiphyses) that form the articulations between the long bones of dinosaurs and their modern-day archosaurian relatives (birds and crocs). For a long time, paleontologists had looked at the ends of dinosaur bones like the femur or humerus and suspected that something might be missing. The bones’ ends looked poorly formed, almost too simple, or were covered with a rough pattern of bumps and grooves. The logical conclusion was that many of these bones must have been covered with pretty significant amounts of cartilage.
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